I can feel it bro I've been through all of it i used to cry every night for about 2-3 years till 11th grade. Little did I know you just have to accept it you don't have an option. I recently started reading out loud before or after bed tbh it helped me alot, I never felt so fluent before I started reading. Avoid reading in class (as it will worsen your stutter) by telling your teachers in person about your stutter. Be positive all the time don't let it break you. You are stronger than you think you are. Let me know if reading helps you.